<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>html基础</title>
  <style>
    * {
      margin: 0;
      padding: 0;
    }

    img {
      width: 1000px;
      height: 500px;
    }

    .my-video {
      width: 200px;
      height: 150px;
    }
  </style>
</head>

<body>
  <div>hello world</div>
  <p>pppppp</p>
  <span>ssss</span>
  <a href="https://baidu.com">去百度</a>
  <ul>
    <li>html</li>
    <li>css</li>
    <li>js</li>
  </ul>

  <img src="https://q6.itc.cn/q_70/images03/20240126/4eaa7950e4214e8e83965f851318a03d.jpeg" alt="">
  <audio src="http://music.163.com/song/media/outer/url?id=447925558.mp3"></audio>
  <video class="my-video" controls src="http://video.chinanews.com/flv/2019/04/23/400/111773_web.mp4"></video>
</body>

</html>